The International Day for the Elimination of Violence against Women takes place on November 25, 2017. Women's activists have marked this day as a day to fight violence against women since 1981. On December 17, 1999, the United Nations General Assembly designated November 25 as this special day. The International Day for the Elimination of Violence against Women is celebrated annually.
The date came from the brutal assassination in 1960 of the three Mirabal sisters, political activists in the Dominican Republic. Women around the world are subject to rape, domestic violence and other forms of violence, and the scale and true nature of the issue is often hidden. That's why the UN invited governments, international organizations and NGOs to organize activities designated to raise public awareness of the problem on this day.
Violence against women is a technical term used to collectively refer to violent acts that are primarily or exclusively committed against women. The UN General Assembly defines the term as “any act of gender-based violence that results in, or is likely to result in, physical, sexual or mental harm of suffering to women including threats of such acts, coercion or arbitrary deprivation of liberty, whether occurring in public or in private life.” (With material from: Wikipedia)